code: def __call__(self, *args, **kwargs):
      return self.transform(*args, **kwargs)
  
file_path: evadb/evadb/functions/abstract/abstract_function.py
imports: from abc import ABCMeta, abstractmethod
  from typing import List, Union
  import pandas
  from numpy.typing import ArrayLike
label_desc: Use image node_id 2 for calling the AbstractTransformationFunction obj's underlying member method code with example usage: obj.__call__() and returns: self